fix(ts): allow manual streamtype override for private streams

[pulk17]

[FIX] ts: Allow manual streamtype override for private streams causing fatal errors

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Summary

Fixed a logic bug in ts_tables.c where the parser would trigger a fatal error ("I can't tell the stream type") for private streams (0x80-0xFF), even if the user explicitly provided --streamtype.

The Issue

When parsing a PMT with private streams (common in M2TS files with PGS subtitles), the code checks if the stream type is private and immediately exits with a fatal error requesting manual selection.

The error logic failed to check if ccx_options.demux_cfg.ts_forced_streamtype was already set by the user via the CLI arguments. This made it impossible to force-read private streams, as the application would crash before applying the user's override.

The Fix

Added a check to verify if the user has already manually set the stream type (via --streamtype).

• If the user has provided a type, the fatal error is skipped, a verbose message is logged ("User manually set stream type..."), and the parser proceeds using the user-supplied value.
• If the user has not provided a type, the fatal error triggers as intended.

Verification

Tested with hitman_cut.m2ts (a sample with missing PMT/Private Stream) and 00000.m2ts (PGS streams).

Command:
ccextractor input.m2ts --datapid 4608 --streamtype 6

• Before:

• After:

[ccextractor-bot]

CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results, when compared to test for commit 4252703...:

Report Name	Tests Passed
Broken	13/13
CEA-708	14/14
DVB	6/7
DVD	3/3
DVR-MS	2/2
General	27/27
Hardsubx	1/1
Hauppage	3/3
MP4	3/3
NoCC	10/10
Options	85/86
Teletext	21/21
WTV	13/13
XDS	34/34

Your PR breaks these cases:

• ccextractor --autoprogram --out=srt --latin1 --quant 0 85271be4d2...
• ccextractor --out=spupng c83f765c66...

Congratulations: Merging this PR would fix the following tests:

• ccextractor --autoprogram --out=ttxt --latin1 --ucla dab1c1bd65..., Last passed: Never
• ccextractor --out=srt --latin1 --autoprogram 29e5ffd34b..., Last passed: Never
• ccextractor --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
• ccextractor --startcreditsnotbefore 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
• ccextractor --startcreditsnotafter 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
• ccextractor --startcreditsforatleast 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never
• ccextractor --startcreditsforatmost 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9..., Last passed: Never

It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you).

Check the result page for more info.

[ccextractor-bot]

CCExtractor CI platform finished running the test files on windows. Below is a summary of the test results, when compared to test for commit 4252703...:

Report Name	Tests Passed
Broken	13/13
CEA-708	14/14
DVB	6/7
DVD	3/3
DVR-MS	2/2
General	25/27
Hardsubx	1/1
Hauppage	3/3
MP4	3/3
NoCC	10/10
Options	81/86
Teletext	21/21
WTV	13/13
XDS	34/34

Your PR breaks these cases:

• ccextractor --autoprogram --out=srt --latin1 --quant 0 85271be4d2...
• ccextractor --autoprogram --out=ttxt --latin1 --ucla dab1c1bd65...
• ccextractor --out=srt --latin1 --autoprogram 29e5ffd34b...
• ccextractor --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9...
• ccextractor --startcreditsnotbefore 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9...
• ccextractor --startcreditsnotafter 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9...
• ccextractor --startcreditsforatleast 1 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9...
• ccextractor --startcreditsforatmost 2 --startcreditstext "CCextractor Start crdit Testing" c4dd893cb9...

Congratulations: Merging this PR would fix the following tests:

• ccextractor --out=spupng c83f765c66..., Last passed: Never

It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you).

Check the result page for more info.

[cfsmp3]

I see "no captions were found" after.

Each PR needs to show a real life improvement.

Do you have any sample in which by doing this we are now able to extract captions?
A private stream is private for a reason, it's not hidden captions (or at least, I haven't seen that ever, but maybe).